I personally dread this sort of discussion (creationists vs. otherwise), not because it's not interesting but because I already know where it ends up going. I'm yet to see one that didn't end up with everyone inflamed and pissed at each other. Same reason I dread political discussions with obvious left and right participants.

As far as debunking, though, I think a measured approach is needed. Certainly when it approaches something on the level of being a common opinion, it needs to be countered. When it's out there in the minority, perhaps not bothering is the best strategy - the problem is that as soon as you try to disprove it, they jump and declare that "aha, we made them react - they're scared! look at how stupid their new proofs are!"

The Birds are using humanity in order to throw something terrifying at this green pig. And then what happens to us all later, that’s simply not important to them…

Wikipedia wrote:Proponents of the Apollo Moon Landing Hoax have argued that space travel to the moon is impossible because the Van Allen radiation would kill or incapacitate an astronaut who made the trip. James Van Allen himself, now deceased (August 9, 2006), dismissed these ideas.In practice, Apollo astronauts who supposedly travelled to the moon spent very little time in the belts and would have received a harmless dose. Nevertheless NASA said that they deliberately timed Apollo launches, and used lunar transfer orbits that only skirted the edge of the belt over the equator to minimize the radiation. Astronauts who visited the moon would probably have a slightly higher risk of cancer during their lifetimes.

No 1 - Why the hell do we care if the moon landing was fake? What has been done has been done. But an interesting question arises... Why hasn't the government proved that the moon landing wasn't a fake?

No 2 - My friend honestly thinks that the government has achieved the status of the novel 1984 by George Orwell, and he is the only sane one in the world. He thinks they will do to him what Big Brother did to the protagonist. Did I mention I'm glad he's moving to canada at 18?

No 3 - The only conspiracy theory that I have ever cared for was the whole DaVinchi Code Novel thingy. Not that I believe in it, I am just astouned at the stupidity people would go through to disprove a FICTONAL novel.

Apollo landings, 11, 14, and 15 left 'corner reflectors' on the moon. They are basically big mirrors that are sitting on the moon, so that we can bounce lasers off of them. They are actual physical objects, that can be objectively verified by anyone with a laser powerfull enough to send a signal to the moon. This is the system that we use to determine the exact distance of the moon from the earth.
(you aim the laser at the moon, and since the moon is about a light second away, you get an echo back.)

In 2008 the LROC is supposed to be doing a site survey for various reasons. Problem is that it's also difficult to verify for average people. The largest peice of hardware on the moon is about 20ft across if I my notes are correct. This means that most telescopes are not going to be able to see them.

However, if you go to http://moon.google.com/ you'll discover something very interesting at the highest magnification.